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How do you choose the perfect rim depth for you?

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How do you choose the perfect rim depth for you?

Postby upamfva » Fri May 21, 2021 12:31 am

How do you choose the perfect rim depth for you?



With infinite funds, the imaginary (or very wealthy) cyclist would be able to tailor their bike and equipment to the ride and conditions on a daily basis - a bit like an infinite dress-up flip book, no two occasions would yield an identical ensemble. The reality of course is that few of us are able to invest in the level of kit required to get it right every time. Perfection must be compromised on a daily basis.To get more news about Road Cicycle Wheels, you can visit zpebicycle.com official website.

This certainly applies to wheels: there is no such thing as one wheel to rule them all, but most of us cannot afford to construct a wheel wardrobe with a lightweight set for mountain rides, deep sections for dual carriageway time trials as well as something with an infallible hub for the winter. So if we're to have just one set - how deep should the rim be?The good news is that the capabilities of modern wheels mean that the weight penalty is often minor, anyway.

"These days, wheels are much more flexible in terms of use. The higher end wheels are getting lighter and lighter, and the aero benefit you get from a deeper wheels is almost always going to outweigh any weight penalty," Tate says.Looking within the Parcours range, as an example, the 77mm front/86mm rear Chrono set weighs in at 1625g vs the 40mm Grimpeur at 1320g: 305g. For reference, the full 500ml bidon sitting on my desk right now weighs 576g, and I wouldn't attempt my two hour lunch time ride without it.

All of this said, it's important to know that the biggest jump in performance comes in the move from a box section rim to a 30mm-40mm wheel with an aero profile; adding more depth is marginal gains territory.

Tate has run the numbers. Comparing a Parcours Grimpeur 40mm wheelset with a popular box section (standard, alloy non optimised rim), he discovered a 22.9W saving. Moving to the Chrono 77mm front/86mm rear pair, the saving was 29.7W - that's a 6.7W difference.

"A modern [well designed] 40mm wheelset will have an optimised rim profile, so even though you're losing out on the depth, you'd still see a benefit in a time trial or solo effort, when compared with an older style or box section rim," he says.Additional research carried out by cycling coach James Spragg of Spragg Cycle Coaching found a difference of 3W when comparing a rider on a Specialized Venge with Roval CLX 64mm wheels versus Roval CLX 32mm wheels, when at 40km/h riding at yaw angles between zero and five degrees. The test was carried out in initial profiling of an athlete targeting the Etape du Tour.
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Re: How do you choose the perfect rim depth for you?

Postby verstellen » Thu Jul 29, 2021 5:15 pm

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Re: How do you choose the perfect rim depth for you?

Postby verstellen » Wed Sep 01, 2021 8:35 pm

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